The N-I or N-1 was a derivative of the American Thor-Delta rocket, produced under licence in Japan. It used a Thor-ELT first stage, a Mitsubishi Heavy Industries-designed LE-3 engine was used as a second stage, and three Castor SRMs. Seven were launched between 1975 and 1982, before it was replaced by the N-II. Six of the seven launches were successful, however on the fifth flight, there was recontact between the satellite and the third stage, which caused the satellite to fail.

InSight's robotic arm / scoop activity during sols 604/5 (yesterday & today on Mars). I'm guess there are more images in the pipeline for sol 605 (today). Get that pit filled guys, so we can save that mole :) @NASAInSight @InSightImageBot #SaveTheMole https://t.co/xY7Lvp0mmu